To get the API key for Distance Matrix API (also called an access token), you need to leave a request on the page https://distancematrix.ai/contact.
After sending the application, the user automatically receives an email with a token and information for starting. The letter also contains such information as a link to the
admin panel, links to useful pages and instructions, information about restrictions, etc.
Please note that if your project requires several keys, you can request their creation from the manager in the correspondence.